Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of...
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2022
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ftdoajarticles:oai:doaj.org/article:d2d6f58e6a974450a6f3d607054388d6 2023-05-15T16:21:23+02:00 Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K Trine S. Dahl-Jensen Michele Citterio Jakob Jakobsen Andreas P. Ahlstrøm Kristine M. Larson Shfaqat A. Khan 2022-05-01T00:00:00Z https://doi.org/10.3390/rs14112563 https://doaj.org/article/d2d6f58e6a974450a6f3d607054388d6 EN eng MDPI AG https://www.mdpi.com/2072-4292/14/11/2563 https://doaj.org/toc/2072-4292 doi:10.3390/rs14112563 2072-4292 https://doaj.org/article/d2d6f58e6a974450a6f3d607054388d6 Remote Sensing, Vol 14, Iss 2563, p 2563 (2022) automatic weather stations GNSS-IR reflectometry snow depth Greenland Science Q article 2022 ftdoajarticles https://doi.org/10.3390/rs14112563 2022-12-31T02:01:11Z Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station NUK-K located on a small glacier outside Nuuk, Greenland. The setup is not optimized for reflectometry purposes. The site is obstructed between 85 and 215 degrees, and as the power supply is limited due to the remote location, the logging time is limited to 3 h per day. We estimate reflector heights using GNSS-IR and compare the results to a sonic ranger also placed on the weather station. We find that the snow melt measured by GNSS-IR is comparable to the melt measured by the sonic ranger. We expect that a period of up to 45 cm difference between the two is likely related to the much larger footprint GNSS-IR and the topography of the area. The uncertainty on the GNSS-IR reflector heights increase from approximately 2 cm for a snow surface to approximately 5 cm for an ice surface. If reflector height during snow free periods are part of the objective of a similar setup, we suggest increasing the logging time to reduce the uncertainty on the daily estimates. Article in Journal/Newspaper glacier Greenland Ice Sheet Nuuk Directory of Open Access Journals: DOAJ Articles Greenland Nuuk ENVELOPE(-52.150,-52.150,68.717,68.717) Remote Sensing 14 11 2563 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
automatic weather stations GNSS-IR reflectometry snow depth Greenland Science Q |
spellingShingle |
automatic weather stations GNSS-IR reflectometry snow depth Greenland Science Q Trine S. Dahl-Jensen Michele Citterio Jakob Jakobsen Andreas P. Ahlstrøm Kristine M. Larson Shfaqat A. Khan Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
topic_facet |
automatic weather stations GNSS-IR reflectometry snow depth Greenland Science Q |
description |
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station NUK-K located on a small glacier outside Nuuk, Greenland. The setup is not optimized for reflectometry purposes. The site is obstructed between 85 and 215 degrees, and as the power supply is limited due to the remote location, the logging time is limited to 3 h per day. We estimate reflector heights using GNSS-IR and compare the results to a sonic ranger also placed on the weather station. We find that the snow melt measured by GNSS-IR is comparable to the melt measured by the sonic ranger. We expect that a period of up to 45 cm difference between the two is likely related to the much larger footprint GNSS-IR and the topography of the area. The uncertainty on the GNSS-IR reflector heights increase from approximately 2 cm for a snow surface to approximately 5 cm for an ice surface. If reflector height during snow free periods are part of the objective of a similar setup, we suggest increasing the logging time to reduce the uncertainty on the daily estimates. |
format |
Article in Journal/Newspaper |
author |
Trine S. Dahl-Jensen Michele Citterio Jakob Jakobsen Andreas P. Ahlstrøm Kristine M. Larson Shfaqat A. Khan |
author_facet |
Trine S. Dahl-Jensen Michele Citterio Jakob Jakobsen Andreas P. Ahlstrøm Kristine M. Larson Shfaqat A. Khan |
author_sort |
Trine S. Dahl-Jensen |
title |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_short |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_full |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_fullStr |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_full_unstemmed |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_sort |
snow depth measurements by gnss-ir at an automatic weather station, nuk-k |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14112563 https://doaj.org/article/d2d6f58e6a974450a6f3d607054388d6 |
long_lat |
ENVELOPE(-52.150,-52.150,68.717,68.717) |
geographic |
Greenland Nuuk |
geographic_facet |
Greenland Nuuk |
genre |
glacier Greenland Ice Sheet Nuuk |
genre_facet |
glacier Greenland Ice Sheet Nuuk |
op_source |
Remote Sensing, Vol 14, Iss 2563, p 2563 (2022) |
op_relation |
https://www.mdpi.com/2072-4292/14/11/2563 https://doaj.org/toc/2072-4292 doi:10.3390/rs14112563 2072-4292 https://doaj.org/article/d2d6f58e6a974450a6f3d607054388d6 |
op_doi |
https://doi.org/10.3390/rs14112563 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
11 |
container_start_page |
2563 |
_version_ |
1766009388136398848 |